<nav class="navbar navbar-default ">
  <div class="container-fluid">
    <!-- Brand and toggle get grouped for better mobile display -->
    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <a class="navbar-brand" href="{:url('index/index')}">{$siteName|default="我的博客"}</a>
    </div>
	
    <!-- Collect the nav links, forms, and other content for toggling -->
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
      <ul class="nav navbar-nav">
        <li
        {//当URL中cate_id参数为空的时候,默认就是首页高亮显示}
        {empty name="$Request.param.cate_id"}
		{empty name="$Request.param.id"}
        class="active"
		{/empty}
        {/empty}
		
        ><a href="{:url('index/index/index')}">首页</a></li>
        {volist name="cateList" id="cate"}
        <li
        {//用请求对象从URL中获取当前的cate_id参数}

		{if $cate.id==$Request.param.cate_id}class="active"{/if}
		{eq name="$cate.id" value="$art.cate_id" }class="active"{/eq}
		
		><a href="{:url('index/index',['cate_id'=> $cate.id])}">{$cate.name}</a></li>
        {/volist}
        
      </ul>
      <!-- 将搜索表单放在右边 -->
      
      <ul class="nav navbar-nav navbar-right">
        <form class="navbar-form navbar-left" action="{:url('index')}" method="get">
        <div class="form-group">
          <input type="text" class="form-control" placeholder="输入关键字" name="keywords">
        </div>
        <button type="submit" class="btn btn-default">搜索</button>
      </form>
      <!-- 根据session判断用户是否登录,显示不同的内容 -->
     {if $Think.session.user_id}  
        <li><a href="#">{$Think.session.user_name}</a></li>
      
        <li class="dropdown">
          <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">操作<span class="caret"></span></a>
          <ul class="dropdown-menu">
            <li><a href="{:url('index/insert')}">发布文章</a></li>
            <li role="separator" class="divider"></li>
            <!-- 跳转到后台的管理中心 -->
            <li>
              <a
               href="/admin.php">管理中心</a></li>
            <li role="separator" class="divider"></li>
            <li><a href="{:url('user/logout')}">退出登录</a></li>
          </ul>
        </li>
        {else/}
          <li><a href="{:url('user/login')}">登录</a></li>

          <li><a href="{:url('user/register')}">注册</a></li>
        

        {/if}

      </ul>
    </div><!-- /.navbar-collapse -->
  </div><!-- /.container-fluid -->
</nav>

	